the move is meant to close a loophole in the state's public records law. the ruling is a victory for those accusing california of a public records act. >>> ktvu learned -- agents used passengers blue tooth devices to track them through the airport. passenger groups are not happy about it. >> reporter: lines can be long. documents show tsa tested a project to measure how long sensors in the terminal to find your blue tooth device, hone in and track you. and how long it takes you to get through security. it detects signals and calculates a wait time. the information would be encrypted and destroyed within two hours. we've learned they tested this technology in 2012 in las vegas and indianapolis. then bailed on it. >> this is an expensive and complicated way of estimating average wait times. compared with having a ticket agent write the time. >> reporter: tsa has been dealing with complaints about how it handles privacy. if not with this technology, then with those enhanced pat down screenings. a spokesman says his group isn't comfortable with blue tooth trac